Histidine has pKa values of 1.8, 6.0 (R-group) and 9.3 . At pH 8.0, the net charge on histidine is

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#Question id: 28210

#Unit 5. Developmental Biology

Morphogen specifies cells in___

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#Question id: 12448

#Unit 10. Ecological Principles

When members of a population move out of a given area, it is called

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#Question id: 27375

#Unit 1. Molecules and their Interaction Relevant to Biology

An atom of sodium has an atomic number of 11 and a mass number of 23. Which of the following statements is correct?

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#Question id: 33377

#Unit 1. Molecules and their Interaction Relevant to Biology

The α helices of proteins have an average length of 

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#Question id: 28303

#Unit 5. Developmental Biology

Capacities of the sperm gain after capacitation involve__

a) CatSper calcium channels to sense calcium influx and monitor the direction of the current

b) recognizing the cues that will guide them to the egg

c) undergoing the acrosome reaction

d) fusing with the egg cell membrane